diff --git a/build.sbt b/build.sbt
index 7a2d78ce6..9a07324dd 100644
--- a/build.sbt
+++ b/build.sbt
@@ -33,7 +33,7 @@ val mimaSettings = Def settings (
   mimaPreviousArtifacts := Set(
     "1.0.0", "1.0.1", "1.0.2", "1.0.3",
     "1.1.0", "1.1.1", "1.1.2", "1.1.3",
-    "1.2.0",
+    "1.2.0", "1.2.1"
   ) map (version =>
     organization.value %% moduleName.value % version
       cross (if (crossPaths.value) CrossVersion.binary else CrossVersion.disabled)
@@ -54,7 +54,7 @@ lazy val utilRoot: Project = (project in file("."))
   .settings(
     inThisBuild(
       Seq(
-        git.baseVersion := "1.2.1",
+        git.baseVersion := "1.2.2",
         version := {
           val v = version.value
           if (v contains "SNAPSHOT") git.baseVersion.value + "-SNAPSHOT"
@@ -124,8 +124,9 @@ lazy val utilLogging = (project in internalPath / "util-logging")
       exclude[DirectMissingMethodProblem]("sbt.internal.util.SuccessEvent.copy*"),
       exclude[DirectMissingMethodProblem]("sbt.internal.util.TraceEvent.copy*"),
       exclude[DirectMissingMethodProblem]("sbt.internal.util.StringEvent.copy*"),
-      // Private final class constructor changed
+      // Private final class constructors changed
       exclude[DirectMissingMethodProblem]("sbt.util.InterfaceUtil#ConcretePosition.this"),
+      exclude[DirectMissingMethodProblem]("sbt.util.InterfaceUtil#ConcreteProblem.this"),
     ),
   )
   .configure(addSbtIO)
diff --git a/internal/util-interface/src/main/java/xsbti/Problem.java b/internal/util-interface/src/main/java/xsbti/Problem.java
index db7f67b22..db61f2bde 100644
--- a/internal/util-interface/src/main/java/xsbti/Problem.java
+++ b/internal/util-interface/src/main/java/xsbti/Problem.java
@@ -3,10 +3,20 @@
  */
 package xsbti;
 
+import java.util.Optional;
+
 public interface Problem
 {
 	String category();
 	Severity severity();
 	String message();
 	Position position();
-}
\ No newline at end of file
+
+  // Default value to avoid breaking binary compatibility
+  /**
+   * If present, the string shown to the user when displaying this Problem.
+   * Otherwise, the Problem will be shown in an implementation-defined way
+   * based on the values of its other fields.
+   */
+  default Optional<String> rendered() { return Optional.empty(); }
+}
diff --git a/internal/util-logging/src/main/contraband/interface.contra.txt b/internal/util-logging/src/main/contraband/interface.contra.txt
index 795e6a4c3..3b5ed4986 100644
--- a/internal/util-logging/src/main/contraband/interface.contra.txt
+++ b/internal/util-logging/src/main/contraband/interface.contra.txt
@@ -16,6 +16,12 @@ type Position {
   pointerSpace: String
   sourcePath: String
   sourceFile: java.io.File
+  startOffset: Int
+  endOffset: Int
+  startLine: Int
+  startColumn: Int
+  endLine: Int
+  endColumn: Int
 }
 
 type Problem {
@@ -23,4 +29,5 @@ type Problem {
   severity: Severity!
   message: String!
   position: Position!
+  rendered: String
 }
diff --git a/internal/util-logging/src/main/scala/sbt/internal/util/codec/PositionFormats.scala b/internal/util-logging/src/main/scala/sbt/internal/util/codec/PositionFormats.scala
index e43ff03bf..7fe9fd6ce 100644
--- a/internal/util-logging/src/main/scala/sbt/internal/util/codec/PositionFormats.scala
+++ b/internal/util-logging/src/main/scala/sbt/internal/util/codec/PositionFormats.scala
@@ -19,6 +19,13 @@ trait PositionFormats { self: sjsonnew.BasicJsonProtocol =>
           val pointerSpace0 = unbuilder.readField[Optional[String]]("pointerSpace")
           val sourcePath0 = unbuilder.readField[Optional[String]]("sourcePath")
           val sourceFile0 = unbuilder.readField[Optional[java.io.File]]("sourceFile")
+          val startOffset0 = unbuilder.readField[Optional[java.lang.Integer]]("startOffset")
+          val endOffset0 = unbuilder.readField[Optional[java.lang.Integer]]("endOffset")
+          val startLine0 = unbuilder.readField[Optional[java.lang.Integer]]("startLine")
+          val startColumn0 = unbuilder.readField[Optional[java.lang.Integer]]("startColumn")
+          val endLine0 = unbuilder.readField[Optional[java.lang.Integer]]("endLine")
+          val endColumn0 = unbuilder.readField[Optional[java.lang.Integer]]("endColumn")
+
           unbuilder.endObject()
           new Position() {
             override val line = line0
@@ -28,6 +35,13 @@ trait PositionFormats { self: sjsonnew.BasicJsonProtocol =>
             override val pointerSpace = pointerSpace0
             override val sourcePath = sourcePath0
             override val sourceFile = sourceFile0
+            override val startOffset = startOffset0
+            override val endOffset = endOffset0
+            override val startLine = startLine0
+            override val startColumn = startColumn0
+            override val endLine = endLine0
+            override val endColumn = endColumn0
+
           }
         case None =>
           deserializationError("Expected JsObject but found None")
@@ -42,6 +56,13 @@ trait PositionFormats { self: sjsonnew.BasicJsonProtocol =>
       builder.addField("pointerSpace", obj.pointerSpace)
       builder.addField("sourcePath", obj.sourcePath)
       builder.addField("sourceFile", obj.sourceFile)
+      builder.addField("startOffset", obj.startOffset)
+      builder.addField("endOffset", obj.endOffset)
+      builder.addField("startLine", obj.startLine)
+      builder.addField("startColumn", obj.startColumn)
+      builder.addField("endLine", obj.endLine)
+      builder.addField("endColumn", obj.endColumn)
+
       builder.endObject()
     }
   }
diff --git a/internal/util-logging/src/main/scala/sbt/internal/util/codec/ProblemFormats.scala b/internal/util-logging/src/main/scala/sbt/internal/util/codec/ProblemFormats.scala
index 9820289da..fb7583a5c 100644
--- a/internal/util-logging/src/main/scala/sbt/internal/util/codec/ProblemFormats.scala
+++ b/internal/util-logging/src/main/scala/sbt/internal/util/codec/ProblemFormats.scala
@@ -4,8 +4,8 @@
 package sbt.internal.util.codec
 
 import xsbti.{ Problem, Severity, Position }
-import sbt.util.InterfaceUtil.problem
 import _root_.sjsonnew.{ deserializationError, Builder, JsonFormat, Unbuilder }
+import java.util.Optional
 
 trait ProblemFormats { self: SeverityFormats with PositionFormats with sjsonnew.BasicJsonProtocol =>
   implicit lazy val ProblemFormat: JsonFormat[Problem] = new JsonFormat[Problem] {
@@ -13,12 +13,20 @@ trait ProblemFormats { self: SeverityFormats with PositionFormats with sjsonnew.
       jsOpt match {
         case Some(js) =>
           unbuilder.beginObject(js)
-          val category = unbuilder.readField[String]("category")
-          val severity = unbuilder.readField[Severity]("severity")
-          val message = unbuilder.readField[String]("message")
-          val position = unbuilder.readField[Position]("position")
+          val category0 = unbuilder.readField[String]("category")
+          val severity0 = unbuilder.readField[Severity]("severity")
+          val message0 = unbuilder.readField[String]("message")
+          val position0 = unbuilder.readField[Position]("position")
+          val rendered0 = unbuilder.readField[Optional[String]]("rendered")
+
           unbuilder.endObject()
-          problem(category, position, message, severity)
+          new Problem {
+            override val category = category0
+            override val position = position0
+            override val message = message0
+            override val severity = severity0
+            override val rendered = rendered0
+          }
         case None =>
           deserializationError("Expected JsObject but found None")
       }
@@ -29,6 +37,7 @@ trait ProblemFormats { self: SeverityFormats with PositionFormats with sjsonnew.
       builder.addField("severity", obj.severity)
       builder.addField("message", obj.message)
       builder.addField("position", obj.position)
+      builder.addField("rendered", obj.rendered)
       builder.endObject()
     }
   }
diff --git a/internal/util-logging/src/main/scala/sbt/util/InterfaceUtil.scala b/internal/util-logging/src/main/scala/sbt/util/InterfaceUtil.scala
index 5a85c9b67..1de667f5b 100644
--- a/internal/util-logging/src/main/scala/sbt/util/InterfaceUtil.scala
+++ b/internal/util-logging/src/main/scala/sbt/util/InterfaceUtil.scala
@@ -36,7 +36,7 @@ object InterfaceUtil {
       case None    => Optional.empty[A]()
     }
 
-  // Overload to preserve binary compatibility
+  @deprecated("Use the overload of this method with more arguments", "1.2.2")
   def position(
       line0: Option[Integer],
       content: String,
@@ -89,8 +89,16 @@ object InterfaceUtil {
                          endLine0,
                          endColumn0)
 
+  @deprecated("Use the overload of this method with more arguments", "1.2.2")
   def problem(cat: String, pos: Position, msg: String, sev: Severity): Problem =
-    new ConcreteProblem(cat, pos, msg, sev)
+    problem(cat, pos, msg, sev, None)
+
+  def problem(cat: String,
+              pos: Position,
+              msg: String,
+              sev: Severity,
+              rendered: Option[String]): Problem =
+    new ConcreteProblem(cat, pos, msg, sev, rendered)
 
   private final class ConcreteT2[A1, A2](a1: A1, a2: A2) extends T2[A1, A2] {
     val get1: A1 = a1
@@ -144,12 +152,14 @@ object InterfaceUtil {
       cat: String,
       pos: Position,
       msg: String,
-      sev: Severity
+      sev: Severity,
+      rendered0: Option[String]
   ) extends Problem {
     val category = cat
     val position = pos
     val message = msg
     val severity = sev
+    override val rendered = o2jo(rendered0)
     override def toString = s"[$severity] $pos: $message"
   }
 }
diff --git a/internal/util-logging/src/main/scala/sbt/util/Logger.scala b/internal/util-logging/src/main/scala/sbt/util/Logger.scala
index 75d7a439d..3e543b5ce 100644
--- a/internal/util-logging/src/main/scala/sbt/util/Logger.scala
+++ b/internal/util-logging/src/main/scala/sbt/util/Logger.scala
@@ -97,6 +97,7 @@ object Logger {
   def jo2o[A](o: Optional[A]): Option[A] = InterfaceUtil.jo2o(o)
   def o2jo[A](o: Option[A]): Optional[A] = InterfaceUtil.o2jo(o)
 
+  @deprecated("Use InterfaceUtil.position", "1.2.2")
   def position(
       line0: Option[Integer],
       content: String,
@@ -116,6 +117,7 @@ object Logger {
       sourceFile0
     )
 
+  @deprecated("Use InterfaceUtil.problem", "1.2.2")
   def problem(cat: String, pos: Position, msg: String, sev: Severity): Problem =
     InterfaceUtil.problem(cat, pos, msg, sev)
 }